Click to open Computer Management.If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

In the left pane, under Storage, click Disk Management.

Right-click an unallocated region on your hard disk, and then click New Simple Volume.

In the New Simple Volume Wizard, click Next.

Type the size of the volume you want to create in megabytes (MB) or accept the maximum default size, and then click Next.

Accept the default drive letter or choose a different drive letter to identify the partition, and then click Next.

In the Format Partition dialog box, do one of the following:If you don't want to format the volume right now, click Do not format this volume, and then click Next.To format the volume with the default settings, click Next.

Review your choices, and then click Finish.

I do not have a windows DVD for recovery or setup.

What should I do? Can anything be done using boot options or BIOS settings at start up?

1) Which error do you get while booting? (The precise text please). 2) Did you add the new partition before or after the OS partition? 3) Is the drive partitioned using MBR or GPT?
–
HennesFeb 12 '13 at 18:43

1 Answer
1

Did you accidentally format over either your C: drive partition or the 100MB system partition that Windows uses to boot from? If so, your only option is going to be to reinstall Windows. Whether you did erase one of your primary partitions or not, it may be possible to do a repair from the Windows install process, which would prevent you from losing any data that did not get formatted.

can i change my active partition option or something like that in bios or boot options
–
UDBFeb 12 '13 at 19:58

I'm not aware of any BIOS that can address the partitions. They always just see the hardware. You will need something with boot capabilities to do that. Either a Windows or Linux DVD or USB drive. Then you can boot from that (via BIOS settings) and inspect/change the partition information. Do you get any part of the boot process working, or just a blank screen? If you get any written errors, what do they say?
–
techturtleFeb 12 '13 at 20:06